Telephone-switch



(No Model.)

G. W. COY.

TELEPHONE SWITCH.

Patented Jan. 7', 1896.A

ATTORNEY UNITED STATESA PATENT OEEicE.

GEORGE lV. COY, OF MILFORD, CONNECTICUT.

TELEPHONE-SWITCH.

SPECIFICATION forming part of Letters Patent No. 552,866, dated January7', 1896.

Application filed April l, 1895. Renewed December 16, 1895. Serial No.572,336. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE XV. COY, a citizen of the United States, anda resident of Milford, in the county of New Haven and State ofConnecticut, have invented a certain new and useful Telephonewitch, ofwhich the following is a specification.

My invention relates to telephony, and particularly to telephoneapparatus wherein one or more switches are employed in cutting into andout of circuit one or more of the various elements of said apparatus,such as the callbell, the receiver and the transmitter.

The main object of the invention is to so construct and arrange saidparts that one or more of said switches may be operated and, if desired,all the necessary switching may be done through the instrumentality ofthe transmitting apparatus instead of being done as heretofore by meansof the receiver or handswitches.

My invention consists in the combination, with the necessary switchingmechanism of a telephone apparatus, of a transmitting appa ratus a partor all of which is movably mounted and adapted in its movement tooperate the switching mechanism, and a signal operated by replacing thereceiver to warn the user that the transmitting apparatus mustbe movedto a position such as to operate the switching mechanism.

My invention also consists in the combination of a switch for one ormore of the circuits of a telephone apparatus, which switch is providedwith conducting arms or levers in one of said circuits, and atransmitting apparatus having a movable part for engaging with said armsto connect them electrically.

My invention further consists in the construction, combination andarrangement of parts hereinafter described, and set forth in the claims.

In the accompanying drawings, forming a part of this specification,Figure l represents in side elevation a telephone apparatus embodying myinvention. Fig. 2 is a like representation of a modiication thereof.Fig. is a diagrammatic represent-ation of the circuits in my apparatus,a switch mechanism being shown in detail. Fig. i is a modification ofthe principal parts forming the subject of Fig. 8.

The forms of switch herein shown and the manner of operation by amovable transmitting apparatus or portion thereof may be greatly varied,and several variations thereof form the subject-matter of applicationsiiled by me March l5, 1895, Serial No. 541,850; April l, 189 5, SerialNo.v 544,012, and April 5, 1895, Serial No. 544,655.

In the apparatus as illustrated the general arrangement is on the usualplan and only those features which embody my invention are shown indetail.

A indicates the call-bell, which may be mounted in a suitable box, as B,made to contain the magneto. The latter being of the usual form andarranged in the usual manner is omitted from the drawings.

@indicates the receiver; D, the transmitter; E, the induction-coil, andF the battery in the local circuit. The coil, the battery, and theswitches operated by the transmitter are preferably located in the boxG, mounted on the back H along with the box B and the transmitter-arm.

For the purpose of doing the switching by means of the transmitter as itis moved into and out of speaking position I have shown in Fig. l anordinary microphone, preferably of the Hunning pattern, mounted on anarm, as I, hinged to the back H.

In the rst application above referred to the switch mechanism isoperated simply by the movable part of the transmitting apparatusoperating upon the switch-levers. In this case the switch-levers areconnected into the circuits and the movable part of the transmittingapparatus serves to conduct the current from one switch-lever to theother when inserted between them.

As shown in Fig. 3, the switch-lever .l is in elbow form pivoted at theangle and carries a plate insulatedl therefrom, which is intended toform connection between two contacts 5 6, located in the receivercircuitThe co-operating lever K is also of elbow form and pivoted at the angleand carries a contact S, insulated therefrom, for engagement with acontact 0, connected to the local circuit 10. These two levers areprovided with suitable springs for holding them in firm contact with themovable part of the transmitter when placed between them and for closingthe other circuits controlled thereby when said movable part is movedfrom between them.

In Figs. l and 3 the movable part of the IOO transmitter is the arm I,which is of metal and forms a path for the circuit between the levers Jand K, when inserted between them. This path is that of the currentthrough the bell represented as circuit Il, circuits 7 and Il having acommon return over circuit l2.

In the apparatus just described I prefer to mount the arm I so that itwill remain in any position to which it is moved by the operator. It isthen advisable to provide some means for calling the attention of theoperator to the fact that he must depress the arm I, after using thetelephone, in order that the switch may be placed in the properposition. Iprovide for this by connecting to the local circuit a branchcircuit, as 13, in which I locate a buzzer or any suitable signal, asindicated at Il. The circuit I3 has included in it two arms, as IWI N,placed a short distance from each other or separated by any suitableinsulation. The receiver C may then be provided with a ring, as O,adapted to pass over both said arms and close the circuit between them,as indicated, though I do not limit myself to this manner of operatingthe switch in the local circuit.

The operation of this apparatus is as follows: The parts being in theirnormal condition, as indicated in Fig. 3, the user after ringing upremoves the receiver froln its hook, (in this case the arms M N,) whichopens the buzzer-circuit at that point. IIe then raises the transmitterinto speaking position, which interriilpts the bell-circuit and allowsthe arm J to bring plate c into engagement with contacts 5 and (j,thereby closing the receivercircuit and arm K to bring plate S intoengagement with contact 9, thereby closing the local or transmittercircuit. Then, when through speaking, the receiver is placed upon itssupport,thereby closing the circuit through the buzzer, the sounding ofwhich warns the user that he is to press the arm I down between thelevers J and K, which cuts out the receiver, cuts in the bell and breaksthe circuit of the buzzer and transmitter at 9.

In the modification illustrated in Figs. 2 and at the transmittingapparatus is shown consisting of a microphone located upon the back II,as indicated at D', and has a iiexible tube, as I', leadingthereto,which terminates in an ordinary mouthpiece, (indicated at P.)About this tube is placed a collar of conducting material, as indicatedat Q. The receiver-switch in this modification is the same as in Fig. 3,and the bell-circuit is through the collar Q, forming a part of themovable portion of the transmitting apparatus. The local circuit in thisconstruction is made and broken by the movement of the receiver-hook R,as indicated. The part co-operating with close.

ing position, thus breaking the bell-circuit and allowing the plate :cto be brought into engagement with the contacts 5 and 6, therebycompleting the receivercircuit. After speaking the receiver is hung up,breaking the transmitter-circuit, and the tube I' is dropped or placedin position of rest between the lever J and the bracket K', thus openingthe receiver-,circuit and closing the bell-circuit.

The arm I may obviously be loosely mounted, so that after use it willfall into place between the levers J and K, but Iprefer to have isfixed, so that it must be moved positively from one position to theother. If, however, the user desires to give it an independent movementits pivot may be provided with a thumb-screw 14C, by which said arm maybe made to move freely and by which, when desired, it may be made toremain in any position to which it may be moved.

Many changes in construction, combination and arrangement of theelements of my apparatus as above set forth may be made withoutdeparting from my invention.

IVhat I claim as my invention isl. In a telephone apparatus, thecombination with switch mechanism therefor, of a transmitting apparatusmovably mo unted for the operation of said mechanism, and a signal,operated by replacing the receiver, to warn the user to move thetransmitting apparatus into switching position, substantially as setforth.

2. The combination with the switches controlling the bell, the receiverand the local circuits, of a transmitting apparatus having a movablepart which when in normal position operates said switches, a signal in abranch of the local circuit, and a switch in said branch closed byhanging up the rcceiver.

3. The combination with the pivoted switch levers of conducting materiallocated in the bell circuit, of a switch in the receiver circuitoperated by the movement of one of said levers, a switch in the localcircuit operated by the movement of the other lever, and a transmitterapparatus having a movable conducting portion resting in normal positionbetween said levers for the purpose set forth.

4.-. In a telephone apparatus, the combination with switch mechanismtherefor, of a transmitting apparatus movably mounted for the operationof said mechanism, a signal, operated by replacing the receiver, to warnthe user to move the transmitting apparatus into switching position, anda switch operated by the transmitting apparatus to stop the signal,substantially as set forth.

- Signed at New York, in the county of New York and State of New York,this 29th day of March, A. D. 1895.

GEORGE XV. COY.

IVitnesses TVM. I-I. CAPEL, HENRY T. HIRscH.

